package com.fox;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.Random;

public class HttpRequest {
    /**
     * 向指定URL发送GET方法的请求
     *
     * @param url   发送请求的URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
          /*  // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }*/
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url   发送请求的 URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result;
    }

    //坐标格式为：纬度,经度|纬度,经度。
    //用来测试并发量 可能会生成经纬度很奇怪的无效地点
    public static String generateLngAndLat(int num) {
        //30-40,90-110 两区块完全是中国的
        Random random = new Random();
        StringBuilder sb = new StringBuilder();
        //生成多个保留2位小数的经纬度
        for (int i = 0; i < num; i++) {
            double lat = random.nextInt(1000) / 100.0 + 30;
            double lng = random.nextInt(2000) / 100.0 + 90;
            sb.append(String.format("|%.2f,%.2f", lat, lng));
        }
        return sb.substring(1);
    }

    public static String sendRouteMatrixRequest(String origins, String destinations) {
        System.out.println(String.format("origins=%s\r\ndestinations=%s\r\n", origins, destinations));
        StringBuilder sb = new StringBuilder("output=json&ak=FI3aXG0ICe95W9xin2uTwPmgQOb2kH95");
        sb.append(String.format("&origins=%s&destinations=%s", origins, destinations));
        return sendGet("http://api.map.baidu.com/routematrix/v2/driving", sb.toString());
    }
    //地名到坐标
    public static String sendAddress2LatAndLng(String address){
        StringBuilder sb=new StringBuilder(String.format("address=%s",address));
        sb.append("&output=json&ak=FI3aXG0ICe95W9xin2uTwPmgQOb2kH95&callback=showLocation");
        return sendGet("http://api.map.baidu.com/geocoder/v2/",sb.toString());
    }
    //坐标到地名
    public static String sendLngandLat2Address(String LatAndLng){
        return sendGet(" http://api.map.baidu.com/geocoder/v2/",String.format("callback=renderReverse&location=%s&output=json&pois=1&latest_admin=1&ak=FI3aXG0ICe95W9xin2uTwPmgQOb2kH95",LatAndLng));
    }
    //
    /*  https://gs.ctrip.com/html5/you/article/detail/946631.html
        let l=$("strong");
        let s="";
        for(let i=0;i<l.length;i++){
            let temp= $(l[i]).text();
            if(temp.indexOf("杭州")==-1)
	        temp="杭州"+temp;
            s=s+"|" +temp;
       }
     */
    public static void  getLocation(){
        String s="杭州集贤亭|杭州五柳巷|杭州良渚文化村|杭州白马湖|杭州小河直街|杭州西湖|杭州浴鹄湾|杭州云栖竹径|杭州保俶塔|杭州安缦法云|杭州钱塘江大桥|杭州西溪蒋村集市|杭州茅家埠|杭州浙江大学之江校区|杭州运河广场|杭州南宋御街|杭州馒头山|杭州塘栖|杭州西溪湿地|杭州九溪烟树|杭州灵隐寺|杭州郭庄|杭州太湖源|杭州清河坊|杭州断桥|杭州宋城|杭州苏堤|杭州虎跑|杭州净慈寺|杭州孤山|杭州青芝坞|杭州宝石山|杭州城隍阁|杭州钱江新城|杭州涌金门|杭州中国美院象山校区|杭州太子湾|杭州大运河|杭州羊坝头|杭州大明山|杭州中国丝绸博物馆 |杭州乐园|杭州野生动物园|杭州鼓楼|杭州龙井路|杭州杨梅岭|杭州166创意产业园|杭州朝晖公园|杭州雷峰塔|杭州十里琅珰";
        String[] array=s.split("\\|");
        StringBuilder sb=new StringBuilder();
        for (int i = 0; i < array.length; i++) {
            String result=sendAddress2LatAndLng(array[i]);

            sb.append("|").append(result);
        }

    }

    public static void main(String[] args) {
      System.out.println(sendRouteMatrixRequest("30.256374576402054,120.16831257927723","30.2528780174,120.1673151589"));
        // System.out.println(sendRouteMatrixRequest(generateLngAndLat(1),generateLngAndLat(5)));
     // String result=sendAddress2LatAndLng("杭州集贤亭").replaceAll(".*\"lng\":(.*),\"lat\":(.*)\\},.*","$2,$1");System.out.println(result);
    }
}